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Wawrinka retires injured vs. Lopez at Swiss Open

GSTAAD, Switzerland (AP) — A day after Roger Federer lost at the Swiss Open citing back pains as a problem, local favorite Stanislas Wawrinka retired from his quarterfinal match Friday with the same injury.

GSTAAD, Switzerland (AP) — A day after Roger Federer lost at the Swiss Open citing back pains as a problem, local favorite Stanislas Wawrinka retired from his quarterfinal match Friday with the same injury.